On the Tesla Gear website, current owners of P90D (Performance 90 kilo-Watt-hour dual-motor) Model S or Model X vehicles will now find a listing for an acceleration upgrade package. Upgrading from Insane to Ludicrous slashes their Tesla's 0 to 60 mph by 10%, bringing it down to a supercar-rivaling 2.8 seconds — in the Model S at least. The Model X will sprint to 60 mph from a standstill in a paltry 3.1 seconds.

Undoubtedly, this is great. However, there's a catch.

As you might have noticed, there's an asterisk after that dollar figure. That's because the $10,000 — by Tesla's own admission — doesn't include tax and labor costs. Tesla directs customers to call their nearby service center for a final labor cost estimate.

So I did. And the woman who answered the phone didn't know what I was referring to. She took my number. I have yet to hear back.

Regardless, there are two ways to look at this new offer: It's a great way for Tesla to allow P90D owners to get the most out of their car for a relative pittance — compared to the cost of, say, a $132,000 Model X Signature.

Alternately, it could be viewed as a short-term cash grab by Tesla, which likely needs an infusion of funds, as it prepares to unveil its mass-market Model 3 on Thursday.

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